<template>
  <div class="cart_page">
    <table>
      <thead>
        <tr>
          <th style="width: 8%">
            <i
              :class="checkAll ? 'iconfont icon-yduifuxuankuangxuanzhong': 'iconfont icon-yduifuxuankuang'"
              @click="checkAll = !checkAll" 
            >
            </i>
          </th>
          <th style="width: 30%">礼品信息</th>
          <th>兑换分数</th>
          <th>数量</th>
          <th>小计 (鸡腿)</th>
          <th>操作</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="(item,index) in cartList" :key="index">
          <td>
            <i 
              :class="checkList[index] ? 'iconfont icon-yduifuxuankuangxuanzhong' : 'iconfont icon-yduifuxuankuang'"
              @click="hdProductClick(index)"
            >
            </i>
          </td>
          <td>
            <section>
              <img width="84"
                :src=" imgBaseUrl +item.coverImg"
                alt="列表图片" />
              <div class="info">
                <h5>{{item.title}}</h5>
                <p>{{item.versionDescription}}</p>
              </div>
            </section>
          </td>
          <td>{{item.coin}}鸡腿</td>
          <td>
            <div class="step">
              <span @click="stepClick(item,-1)">-</span>
              <input type="text" disabled v-model="item.total" />
              <span @click="stepClick(item, 1)">+</span>
            </div>
          </td>
          <td>{{item.total*item.coin}}鸡腿</td>
          <td>
            <span class="del" @click="del(item.id)">删除</span>
          </td>
        </tr>
      </tbody>
    </table>
    <div class="total">总计：<span>{{getTotal}}鸡腿</span></div>
    <div class="submit">提交</div>
  </div>
</template>

<script>
  import {delCart,getUserCart} from '@/request/userApi.js'

  import  { mapActions } from 'vuex'
  export default {
    data() {
      return {
        // 购物车列表
        cartList:[],
        // 步进器
        stepNum: 1,
        // 单选按钮数组
        checkList: []
      };
    },
    computed:{
      // 全选/全不选
      checkAll:{
        set(newVal){
          this.checkList =  this.checkList.map(item => newVal)
        },
        get(){
          return !this.checkList.includes(false) && this.checkList.length!=0  //没包含false就是全选状态
        }
      },
      // 总鸡腿
      getTotal(){
        return this.cartList.reduce((pre,cur,index)=>{
          return  pre + (this.checkList[index] ? cur.coin * cur.total : 0)
        },0)
      }
    },
    created(){
      // 请求列表
      getUserCart().then(res=>{
        if(res.code == 0){
          this.cartList = res.data

          this.checkList = this.cartList.map(item => false)
        }
      })
    },
    methods:{
      ...mapActions({
        asyncChangeIsShowToast: 'toastStatus/asyncChangeIsShowToast'
      }),
      // 商品左侧点击事件
      hdProductClick(index){
        this.$set(this.checkList, index, !this.checkList[index])
      },
      // 步进器
      stepClick(item,num){
        if(item.total-1==0 && num==-1){
          return
        }
        item.total += num
      },
      // 删除
      del(id){
        delCart({
          productIds: id
        }).then(res=>{
            if (res.code === 0) {
              // 删除成功
              this.asyncChangeIsShowToast({
                msg: '删除成功',
                type: 'success',
              });
              setTimeout(()=>{
                this.$router.go(0); // 刷新页面
              }, 1500)
            }
        })
      }
    }
  }
</script>

<style lang="less" scoped>
  .cart_page {
    background: #fff;

    table {
      width: 100%;
      border: 1px solid #e6e6e6;
      box-sizing: border-box;
      color: #666;
      border-collapse: collapse;
      font-size: 14px;

      thead {
        background: #f2f2f2;

        th {
          padding: 19px 0;

          .iconfont {
            cursor: pointer;
          }

          .icon-yduifuxuankuangxuanzhong {
            color: #0a328e;
          }
        }
      }

      tbody {
        tr {
          td {
            vertical-align: middle;
            text-align: center;
            padding: 19px 0;
            table-layout: fixed; // td的宽度固定，不随内容变化

            .iconfont {
              cursor: pointer;
            }

            .icon-yduifuxuankuangxuanzhong {
              color: #0a328e;
            }

            section {
              padding-left: 20px;
              display: flex;
              box-sizing: border-box;

              img {
                margin-right: 12px;
              }

              .info {
                padding-top: 20px;
                flex: 1;
                overflow: hidden;
                box-sizing: border-box;
                text-align: left;

                h5 {
                  overflow: hidden;
                  color: #333;
                  font-size: 18px;
                  white-space: nowrap;
                  text-overflow: ellipsis;
                  margin-bottom: 20px;
                }

                p {
                  color: #666;
                  overflow: hidden;
                  white-space: nowrap;
                  text-overflow: ellipsis;
                }
              }
            }

            .step {
              width: 106px;
              height: 32px;
              margin: auto;

              span {
                float: left;
                width: 30px;
                height: 32px;
                display: block;
                border: solid 1px #d1d1d1;
                font-size: 20px;
                box-sizing: border-box;
                font-weight: normal;
                font-stretch: normal;
                line-height: 30px;
                letter-spacing: 0px;
                color: #999999;
                text-align: center;
                cursor: pointer;
                background: #fff;
              }

              input {
                box-sizing: border-box;
                width: 46px;
                height: 32px;
                float: left;
                text-align: center;
                font-size: 14px;
                line-height: 23px;
                letter-spacing: 0px;
                color: #666666;
                border: 0;
                border-top: 1px solid #d1d1d1;
                border-bottom: 1px solid #d1d1d1;
                background: #fff;
              }
            }

            .del {
              border: 1px solid #ececec;
              border-radius: 4px;
              padding: 5px 10px;
              cursor: pointer;

              &:hover {
                color: #fff;
                background: #0a328e;
              }
            }
          }
        }
      }
    }

    .total {
      padding: 30px 0;
      text-align: right;
      font-size: 22px;

      span {
        font-weight: bold;
        color: #fd604d;
      }
    }

    .submit {
      width: 175px;
      height: 40px;
      text-align: center;
      line-height: 40px;
      font-family: SourceHanSansSC-Light;
      font-size: 18px;
      font-weight: normal;
      font-stretch: normal;
      letter-spacing: 0px;
      color: #ffffff;
      cursor: pointer;
      background-color: #0a328e;
      float: right;
    }
  }
</style>